US1289541A - Whistle. - Google Patents

Description

E. e. RAFF.

WHISTLE.

APPLICATION FILED APR. m. 1913.

Patented Dec. 31, 1918.

' ERNEST e; RAFF, or sr. Louis, MISSOURI, ASSIGNOR To LIBERTY AccE ssoRI s CORPORATION, or ST. LOUIS, MISSOURI, .A CORPORATION or ivirssoo m .WH sTLE.

Specification of Letters Patent. "Patented Dec. 31 1918.

Application filed April 1913. seriarno. 227,764.

L; 1To all wh0m-z't mag concern Be; it.-known-'th'at- I, ERNEs'r G."RAFF, a citizen ofithe United States, residing at -the city. of St, Louis,- State: of Missouri, r'have' -invented certain new anduseful Improve t-mentsz .in Whistles; of which the following isa. specification. v.

This invention relates toi'fwhistlespr sig nal ingdeviceseof thez type that is operated lo byrthee-exhaust gases of antomobile engines,

andAJhas-ZfOr its-main:object tot-provi'de a wwhistle Whiehe' anE-be readilyattached to the exhaust manifold :of the engine and which v isadaptedgtojbeoperated by :a i portion of .the gases that passesthroughsaid manifold. v @Anothenobject isto-provide a whistle of {the characterreferredto which emits a fi'soft gzand tpleasing sound,- the pitch of. which can I bevaried atthe will-of the operator.

: Another: object 'istto, provide aswhistle of the -charac ter. referredntothat is accessible 0r purposes of ic leaning;-repair;-etc. Other gwohjectsandgdesirablefeatures of myv inven- 1 ti-on-willbe hereina-fter set out.

- Onehtycot so-c'alled' exhaust horn 3' or whistle with which; I am familiar is adapted .,-..;t0-,.be; arrangedattheextreme. rear end of {the exhaust pipe'.u;i-T-h -is typewis open to twoseriousl-objeftions, namely the fact that 30... 1t is vquickly rendered inefficient by accumufclations of road dust and mud and 'the fact that when the entire exhaust gases are divertedufrom their-usual path of travel to operate the whistle considerable back pressure is produced-which materially affects I thegoperation of the engine. Another type .of whistleiis adaptedtobeoperated by the j Jeompressedggases lin nthe cylinders of the 40 to have finely ground and seated valves to ,op crate against the relatively high cylinder ijpressure, and,furthermore, gives forth a I 'l'shrill, unpleasant sound,-dne--to 'thehighoperating: pressure. This type .ralso affects 5. ithe .efliiehcy of the enginemwing to the fact that whenever the whistle is operated the 1 Compression. in .theiparticular cylinder with I whirh thewhistle is; connected istmater-ially thereof equippedwith a-vwhjistleiconstrncted improvedxwhistle is' connected to the exhaust'manifold 'of the engine in such a Imanner that onlya'portion of the-exhaust gases *passing' through "said "manifold is utilized to operate the-whistle, and,= therefore, it-- will be :fobvious that wheneverfmy whistle is operated the efiect will *be actually beneficial" to: the. engine; 'in 'that s-aid" kwhistle ms virtually as E a: muffler tint-out tere- 1ieve; some ofthewbaclcpressure that is caused by, the gases passing 'through* the muffler.

"My whistle. comprises fewsimple partsion which no accurate machine worlcis-neces sary,= which can Cberprodu'ced" at 1 a low: cost of; manufacture and which can be assembled.-

and-installed by unskilled labor. a

" In; .theaCcompanyihg drawings forming 'tional vi'eW' f-Ya' portionof an automobile.

showing the exhaust manifold of the 'motor in accordance with my invention; v Fig. is'aafan enlarge'd longitudinal sectional viewr-of the whistle; r :Fig; 3 is anwelevational viewfof' the elbow lnemloer, *looking in the direction of the arrows as indicated-in Fig-2; I

Fig. 4 is a perspective view of the-elbow member and v Fig. 5 is a perspective view of the plunger. Briefly describedglny invention consists in an automobile "whistle provided with means 2 controlled by 1 the operator I of w the automobile. for? varying:- the pitch 0f: the -soundemitted therefrom and. .which is con engine, but has thedi'sadvantage-iof having "-structod--in; suchwaw manner" that'it can be I easily and quickly i'nsta-lled or the exhaust:

manifold 'of-va'rious stylesef internalcombustion:engines. a

Referring to the drawingspwhich"illus- ,-;trate one form of'my'inventiom A designates an internal 1 combustion engine provided.

with the usual exhaust manifold B th'rough Whirh the dischargedgasespassontheir way to the mu 'fler (notshown) {eMyimprovedqwhistle comprises a tubej or parttof thisispeeification, which like -n'1imbcrs-of reference denote like parts wherever theycoccur, I

means of a suitable fastening devlce, such,

- ti-allyclosed end beingfor the purpose of The edge of the walls: around the opening 11 is rounded by bend-l 7 is provided with a reduced lower end havthroat 6,"said restriction being formed by ing exterior screw threads 3, there being a shoulder 4' at the juncture of the reduced end and the other part of the elbow member. The elbow member is provided with a port 5 extending axially therethrough, the upper end of saidport being restricted to form a an abutment 7 preferably formed integrally with the elbow member, so that the upper end ofthe elbow member presents a solid front with the exception of the restricted throat 6. An annular groove 8 is formed in the solid front face of the'elbow member, into whi'hone end of the tube'is secured by "for instance, as set screw 10. The other end .[Of the tube-' is spun-0r otherwise suitably I forcing 't-he tone.

drawn together, so as to leave'a small orifice 11, to be hereinafter referred to, said paring the edges of the" metal back, as at 12.

1.: Within the tube a plunger 13 is slidably mounted and is provided with a lug 14:, to

- which one end'of the operating cord or ca- ,wble 15 is secured, the other end of the cable extending to a point within the automobile to which the whistle is attachedfor convenience ofeoperationbythe driver of the machine. A spring 9 is mounted in the tube .1 back of the plunger 13'. and tends normally 5'; to force theplunger toward the elbow mem- 40 The plunger 13 is provided with an anj space '18, within groove 8', said lug 17 having a flat throat-closing portion which is ber2.

nular lug 17, which is adapted to fit in a adapted, when the plunger is in normal p0:

' sitiont'o enter and close the restricted throat 6, which is flat on one side, so as to be adapted to coeperate' with flat part 16.

Thus the abutment 7 is encircled within the recess formed in the plunger 13 between the lugs 16 and 17 when the plunger is in its normal closed position, whereby a tight oint ;:.1s formed between these parts whenthey are in. closed position, thereby preventing the exhaustfrom the manifold operating the a;,s1gnal.'- Of course, it will be understood that the too face of the abutment 7 is flat, as isus'ualin whistles.

tion: of the gases from the exhaust'pipe to pass through said throat into the tube, from which the gas escapes through the exit port 19 of the tube 1 and produces a musical Whistling sound. By moving the plunger or piston valve 13 toward or away from the abutment-7, the pitch of the sound emitted from the exit port 19 can bevaried at will, and when the operator releasesthecord 15 the plunger 13 will, under the'influence of the spring 9, return to its normal closed po-' sition, thereby closing throat 6, and thus automatically prevent the exhaust gases from acting on the sound-producing means of the whistle. 7

In practice I arrange the operating end of the cable or ord 15 adjacent the steering wheel of the automobile andhave the said 7 cord pass through suitable eyelets or pulleys 20 arranged in the dash of the automobile, but the particular manner of leading the operating cable to within convenient reach of the driver of the automobile can be varied at will.

In the drawings I have shown the whistle asbeing arranged in a substantially'horizon ftal position on the exhaust; manifold or pipe,'but it is obvious that said whistl'e'could 'be'arrang'ed'in an inclined position without changing the 'mode or result" of operation,

1 From the above it will be se'en that I have devised a whistle for automobile engines that is' easily accessible for the purposeof cleaning, repairing, etc that is not exposed to road dust and mud that will emit a pleasing musical sound, owing to the fact thatit is operated by the gases in the ex- 'haust'pipe which'are of only a few pounds pressure; 'a whistle in which the pitch of the sound v emittedtherefrom can be'varied" at will of theoperator'; that comprises few and simple parts that can be man'ufactured cheaply and which can be readily installed on the exhaust manifold or pipe or on an automobile engine by simply threading a hole in the exhaust manifold or pipe at any accessible oint between the engine and the 1 usual manifold."

Having thus described this invention, I

hereby reserve the benefit of all changes in form, arrangement, order. or insect parts,"-

as it isevidentthat many minor changes may be made therein without departing from the spirit of this invention or the scope 'of' the following claimi t "I claim: M v 1" Awhistleof the character described, comprising a'hollow' memberformed on one'e'nd with an annular groove, the inner wall there- When the'cord or'cable 15 is pulled by theoperator'in a direction to compress the spr1ng'9, the piston valve or plunger 13 is qmwithdrawn from the throat 6 and uncovers the exit port 19 of the tube and allows a por-" of having a flat'surface, the said end of the hollow member having an inlet openingone wall of which is flat and in, alinement with opening, a reciprocal valve in the tubular whereby when said valve is moved the pitch member, said valve having an annular flange tone of the Whistle Will be altered by the flat at its inner end, the inner edge of said flange surfaces and the distance the inner end of 10 having a flattened portion to register With the valve is from the groove.

the flat surface in the annular groove when In testimony whereof I hereunto aflix my the flange is seated in said groove, and means signature.

for Withdrawing the flange from the groove ERNEST G. RAFF.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O.

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